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Pancerze reaktywne i aktywna ochrona balistyczna

100%

Galiński C.

tom nr 1 (15)

45--56

Artykuł omawia zasady działania pancerzy reaktywnych i wybranych typów aktywnej ochrony balistycznej. Opracowany został w oparciu o materiały ze szkolenia Survivability of Armoured Vehicles.

The paper discusses principles of operation of reactive armour and selected types of active anti-ballistic defence. The paper is based on “Survivability of Armoured Vehicles” training materials.

Assessment of the concept of a propeller working in a slot in the middle of wing of a micro air vehicle

63%

Mieloszyk J. , Galiński C.

tom Vol. LX, nr 2

269--282

Two configurations of micro-airplanes are compared in this paper. The first, very innovative one, has a propeller working in a slot in the middle of the wing. The second airplane has more classical configuration with a pusher propeller. Advantages and disadvantages of both configurations are evaluated, which makes it possible to assess what are the best possible mission types for each micro-airplane.

W artykule porównano dwie konfiguracje mikrosamolotów. Pierwsza z nich, innowacyjna, ma śmigło w szczelinie płata. Druga, bardziej konwencjonalna zakłada wykorzystanie śmigła pchającego. Oceniono wady i zalety obydwu konfiguracji, dzięki czemu można wskazać najbardziej odpowiednie rodzaje misji dla każdego z mikrosamolotów.

Propulsion configuration effect on performance of an inverted joined wing airplane

51%

Galiński C. , Sieradzki A. , Kalinowski M.

tom Vol. 23, No. 3

135--141

Efficiency is crucial for an airplane to reduce both costs of operations and emissions of pollutants. There are several airplane concepts that potentially allow for increasing the efficiency. A few of them were not investigated thoroughly enough yet. The inverted joined wing configuration, where the upper wing is positioned in the front of the lower one is an example of such a concept. Therefore, a project consisting of an aerodynamic analysis and optimisation, development of the software for multidisciplinary optimisation, development of an electric propulsion system, development of an experimental scaled demonstrator, wind tunnel testing and flight-testing was undertaken by consortium led by the Institute of Aviation, including also Warsaw University of Technology, Air Force Institute of Technology and small company MSP. Results of this project led to the conclusion that inverted joined wing configuration allows to build an airplane with the best performance in the world, but its advantage against conventional airplanes is marginal. One reason for this is large trimming drag of the configuration with relatively high position of the thrust vector. Therefore, other configurations of the propulsion were also considered to see if airplane performance could be further improved. This effort is described in the present paper.